BMI Calculator (Body Mass Index)
Quickly calculate BMI from weight and height. Shows BMI category (underweight, normal, overweight, obese) and explains limitations (muscle mass vs. fat).
BMR Calculator (Basal Metabolic Rate)
Estimates calories your body needs at rest using Mifflin-St Jeor (and optional Harris-Benedict) formulas. Useful baseline for calorie planning.
Body Fat Percentage Calculator
Estimates body fat using the U.S. Navy method (neck/waist/hip measurements). Provides healthy ranges by sex and age.
Ideal Weight Calculator
Compare multiple formulas (Devine, Robinson, Miller) to get target weight ranges and understand ideal weight context.
Calorie Calculator (Daily Calorie Intake)
Combines BMR and activity level to suggest maintenance, weight loss, and weight gain calorie targets with recommended weekly changes.
Protein Intake Calculator
Suggests daily protein targets based on body weight and activity goals (maintenance, muscle gain, weight loss).
Macro Calculator (Carbs, Protein, Fat Ratios)
Generates macronutrient grams from calorie targets. Offers presets (balanced, low-carb, high-protein) and custom ratio input.
Water Intake Calculator
Recommends daily water intake by weight and activity with practical tips for hydration during exercise.
Keto Macro Calculator
Provides ketogenic macronutrient targets (fat-forward ratios) tuned to your calorie goal and carb limit per day.
Intermittent Fasting Timer Tool
Set fasting/eating windows and start a countdown timer. Visual timeline and optional reminders help you stick to your schedule.
TDEE Calculator (Total Daily Energy Expenditure)
Calculates total daily calories burned by combining BMR and activity multipliers — the most useful number for diet planning.